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You need to transfer some coins to Kucoin then start the trade. After you sign up, you can transfer BTC/LTC/ETH to Kucoin then start trading. You can transfer some coin from Coinbase to Gdax, then transfer the coin from Gdax to Kucoin to reduce the fees. Because if you directly send from Coinbase, the fee maybe pretty high.

PLEASE, I HAVE A QUESTION BUT IT'S FROM ANOTHER TOPIC. ARE YOU WILLING TO ASSIST?

Sure. What question do you have?

Also, you can use LTC/ETH if you have. Because if you directly use BTC, the transaction may take some time. I generally use LTC or ETH, which will transfer pretty fast to Kucoin.

ALRIGHT.